India, June 16 -- A 59-year-old man who helped serial killer Devender Kumar Sharma, also known as "Doctor Death," kidnap and murder at least 21 taxiand truck drivers in 2003 and 2004 in Delhi and Gurugram was arrested by the Delhi Police's Crime Branch from Aligarh on Saturday, officers said on Sunday.

The accused, identified as Rajender Raju, was a key associate of Sharma and was absconding for the past 21 years, police said. Sharma, a BAMS degree holder, and his gang, including Raju, lured taxi and truck drivers by hiring their services, killed them, disposed of their bodies, and sold the vehicles in the grey market for Rs.20,000 to Rs.25,000 each.

"While on the run, Raju committed a murder in Jaipur, Rajasthan in 2007. He was arreste...